3° 



THE CODLING MOTH 



develops, gradually increasing in size until at the end of three 

 or four weeks it is about three fourths of an inch long-, and of 

 the general form represented in Fig. i, e. Having now fin- 



FiG. I. Codling Moth: <?, injured apple; /', place where egg is laid; e, 

 larva; (/, pupa ; /, cocoon ; g,f, moth ; //, head of larva. {After Riley.) 



ished its caterpillar growth, it leaves the apple and seeks some 

 crevice in the bark, where it spins a rather slight silken cocoon, 

 in which it changes to the quiet pupa or chrysalis state. In 

 this pupal condition it takes no food but the tissues of the 

 body undergo the wonderful transformation by which the 

 worm is changed to the moth. Two or three weeks after the 

 cocoon was made the insect comes out as a moth, like the one 

 which laid the egg in the blossom end of the young apple. 

 These moths commonly lay eggs for a second brood of worms, 

 that develop in the apples throughout the late summer and 

 early autumn. 



Experiments conducted at this Station during the last few years 

 as well as the experience of thousands of orchardists throughout 

 the United States have demonstrated that the injuries of the 

 C'odling Moth may be prevented by spraying the trees with Paris 

 green, mixed with water. By means of the spraying machine 

 the fruit grower is able to place in tiie blossom ends of the young 

 apples a few particles of poison, so that when the newly-hatched 



